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(First upload on July 14 2009. Last on June 21 2021) [ 日本語 | English ]

Spergularia (Pers.) J. Presl et C. Presl (ウシオツメクサ) Usubenitsumekusa (ウスベニツメクサ, 薄紅爪草), red sandspurrey or roadside sandspurry Lifeform: weedy, annual/prennial forb < 25 cm high Distribution: native to Europe and Asia (exotic to Japan)

Habitat: roadside, open space, seashore, etc. Check also S. marina and S. bocconii when the habitat is seashore Pilus (線毛): sparsely on leaves and upper parts of stems Chromosome number: 2n = 18, 27, 36 or 54

Spergularia rubra in Hokkaido

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[1/2] at a vacant site, N27/E2, East Ward, Sapporo, on June 2 2012. [3] at a roadside at the foot of Abuta Shrine (虻田神社) on June 6 2013. [4] along a paved road in N22/W4, North Ward, Sapporo, on May 22 2021. [5/6] close to AMEDAS weather station in Horokanai Town, northern Hokkaido, on June 25 2018. [7/8] on a wasteland in N21/E2, East Ward, Sapporo, on May 13 2020.